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Herein a one-step, easy, cheap and eco-friendly Solvothermal synthesis method has been used to synthesize monodisperse, uniform and ultrasmall chromium oxide (Cr2O3) nanocrystals (NCs). Transmission electron microscope (TEM) image of as-prepared Cr2O3 NCs shows the spherical shape with a uniform size of ∼4.5 nm. The oxidation state of chromium ion has confirmed by absorption as well as electron paramagnetic resonance (EPR) spectroscopy. Magnetic properties of as-synthesized NCs show low-temperature antiferromagnetic (AFM) exchange with Currie-Weiss (C-W) temperature ϴ = −160 K. Further, nearest neighbour exchange coupling constant JNN has found to be −16 K (Here K is Boltzmann constant) for Cr2O3 NCs by considering the nearest neighbours (Z) is 4.

Two dimensional (2D) nanosheets to nanoplatelets (NPLs) conversion can be done by controlling the interaction of ligand or surfactant with three dimensional (3D) CsPbBr3 nanocubes. Unlike the involvement of freely interacting surfactants in such transformation, herein, the surfactant molecules were grouped together on gold nanocluster (AuNC) surface to bind the 2D nanosheets into platelets which are much larger in size than those reported previously. Cetyltrimethylammonium bromide (CTAB) was used as coating over water soluble glutathione protected AuNCs to formulate the hydrophobic CTAB@GSH-Au nanocomposites. Bright emission from the perovskite was quenched by the AuNCs.

Polydopamine (PDA) is a biopolymer inspired by the mussel chemistry. Due to its capability to bind various metal-ions, PDA has been explored in several potential applications including absorbents for heavy metal contaminants and templates for nanoparticle growth. In this study, metal-ion-containing PDA was prepared by introducing Cu, Ni, and Co cations during synthesis. We discovered that nanoparticles (NPs) formed under intense electron beam irradiation. For Cu-containing PDA, both equiaxed NPs and rod-like nanocrystals were observed. In contrast, Ni and Co NPs were mainly equiaxed with smaller diameters. The formation of metal NPs is likely a result of electron beam induced reduction. We also demonstrated that electron beam could induce growth of Cu NPs on the surface of PDA-coated SiO2 particles. This result suggested that PDA coating could be used as a platform to grow metal NPs on ceramics and potentially other substrates.

In this study, YVO4:Nd nanocrystals embedded in sintered high-silica porous glass are synthesized. XRD and Raman spectroscopy analyses confirm that YVO4:Nd nanocrystals are dispersed in sintered high-silica glass, and the average size of the nanoparticles is 24 nm. Absorption, emission intensities, and radiation quantum efficiency of Nd3+ ions are obviously enhanced after crystallization. The stimulated emission cross-section of Nd3+ ions 4F3/2 → 4I11/2 transition reaches 5.2 × 10−20 cm2, which is the largest in silicate glasses.

Nitrogen-doped pyrolytic carbon coated Fe3O4 nanocrystals supported by large sheet-size graphene (N-pC/Fe3O4/G) were synthesized by a self-assembly process followed by heating to obtain a high-performance anode material. The 3D porous poly-melamine sponge (PMS) acted as a template for the assembly of graphene to form curved and hollow foam structure, and as a source of N-doped carbon coating of Fe3O4 nanocrystals. The N-pC/Fe3O4/G composite exhibits good reversible capacity of 825 mAh/g after 350 cycles at a high current density of 1 A/g, showing much better performance than either one of its two components. Its performance benefits from the long-range conductivity of the graphene foam and the short-range local conductivity of the N-doped carbon coating.

Ti-40Nb alloy is an excellent choice for long-term implant applications due to its biocompatibility, high corrosion resistance and low Young’s modulus. To improve osteointegration and biological performance, hydroxyapatite (HA) coatings with ionic substitutions such as Sr or/and Mg have been proposed. Thus, the aim of this work was to obtain Sr substituted HA and Sr/Mg-co-substituted hydroxyapatite coatings using electrochemical deposition onto Ti-40Nb alloys. This technique has a high versatility and ability to coat irregular surfaces. The results showed it is possible to obtain a Sr-HA or Sr/Mg-HA coatings onto Ti-40Nb alloys using this method. The incorporation of 0.5% of Sr into HA produces a homogenous layer with a cauliflower-like microstructure of calcium deficient hydroxyapatite nanocrystals; while the addition of Mg as co-dopant (Sr + Mg = 1%) inhibits the hydroxyapatite crystallization, modified the microstructure to nanosphere-like crystals and increases Ca-deficiency.

Nanocrystalline metals usually exhibit high strain rate sensitivity m, while the magnitude of m in amorphous alloys are relatively lower and near zero. In the present letter, however, a two phase NiW composites involving nanocrystals dispersed in amorphous matrix exhibited unexpected large m even higher than that of the monolithic nanocrystalline NiW. The underlying mechanism involving the interactions between nanocrystalline and amorphous phases was proposed, as the confined crystalline and amorphous phases behaved quite differently from their monolithic counterparts.

This work reports on the development of fully bacterial cellulose-derived stiff nanopapers by the infiltration of bacterial cellulose nanocrystals (BCNCs) into bacterial cellulose (BC) membranes. The incorporation of the nanocrystals into BC membranes led to a more dense and compacted structure with smoother surface, improving both, the oxygen barrier properties due to the tortuous path created by the BCNCs, and the mechanical performance. This simple and practical method provides a new approach to make stiff nanopapers fully derived from BC with potential applications in eco-friendly packaging.

3D porous nano/micro ZnFe2O4 has been prepared from the leach liquor of jarosite residue via a facile chemical coprecipitation method followed by sintering at 800 °C in air atmosphere. As anode material for lithium ion batteries, the prepared ZnFe2O4 exhibits high specific capacity, excellent rate capability, and good cycling stability, which can be due to the beneficial effects of primary nanocrystals of ZnFe2O4, the unique 3D porous nano/micro structure, and the associated pseudo-capacitive behavior during discharge/charge processes.

This research reports the thermoelectric properties of the Al-doped ZnO (AZO)/silicon-rich oxide (SRO) superlattices. The thermoelectric figure of merit (ZT) as functions of the grain size, thickness of the superlattices, the number of SRO layers, and conductance were studied. The use of the SRO layers markedly improved the thermoelectric ZT. Moreover, the replacement of ZnO by AZO further increased the ZT. The ZT value of the AZO/SRO superlattices was as high as 0.44 when the total thickness was 45 nm and three SRO interlayers were inserted. The improvement of ZT was contributed by the reduction of the grain size, formation of the Si nanocrystals and the increase in the electrical conductance caused by using SRO interlayers and Al doping.

Hierarchical CeO2 octahedrons with average edge lengths of ∼562 nm, ∼353 nm, ∼65 nm, ∼52 nm, ∼46 nm self-assembled from 5 to 8 nm primary nanocrystals were synthesized via a facile hydrothermal route by regulating pH value of the reaction system. A possible formation mechanism was proposed. These hierarchical CeO2 octahedrons exhibited high activities for CO oxidation.

Dispersing nanocrystals in solid state matrix is a practical way for the applications in nanodevices, which can yield production of non-agglomerated nanocrystals with good magnetic properties. In this work, Fe3O4 nanocrystals in non-magnetic Al2O3 matrix are synthesized by one-step method. HRTEM analyses confirm the formation of chemical stable Fe3O4 nanocrystals. The finite element calculations and Raman spectra demonstrate that the Fe3O4 nanocrystals experience compressive strain from Al2O3 matrix. Typical magnetic behaviors of weakly interacting Fe3O4 nanocrystals are observed, which are characterized by superparamagnetism. Moreover, the influence of strain on their magnetic properties of the Fe3O4 nanocrystals are also investigated. By utilizing the strain engineering, it paves the ways for the applications of Fe3O4 nanocrystals in magnetic nanodevices.

Bioactive nanostructured coating has been a key strategy to improve the cell adhesion and osseointegration of metallic implants. This study presents the electrophoretic coatings of hydroxyapatite with tunable nanocrystal morphologies. The hydroxyapatite nanocrystals were prepared with three different elongated dimensions by the hydrothermal method (∼80 nm; SHA, ∼300 nm; MHA, and ∼900 nm; LHA), which were used in combination with a fugitive biopolymer chitosan for the electrophoretic deposition on titanium. All the HA coatings were densely and homogeneously deposited and had different and unique nanotopologies and corresponding surface areas. The coating parameter significantly altered the cell behaviors including anchorage, spreading and proliferation; the cell adhesion was better on the small- and middle-sized nanocrystals (SHA, MHA > LHA), which was interestingly opposite in cell spreading (LHA > SHA, MHA), and then the cell proliferation was again up-regulated on SHA and MHA. Although more studies are needed to elucidate the biological phenomenon, the sets of results imply the importance of tailored nanocrystal morphology in the initial (adhesion and growth) cellular events.

Cauliflower like structures has attracted a great research interest because of their novel and special morphology. Herein, cauliflower like cadmium oxide (CdO) and cesium (Cs)-doped CdO nanostructured films composed of nanocrystals were grown on glass substrates by spin coating method. The x-ray diffraction (XRD) reveals that the CdO and Cs-doped CdO films show cubic phase. The scanning electron microscopy (SEM) images exhibited that formation of cauliflower like nanostructured films. The x-ray photoelectron spectroscopy (XPS) analyses results affirmed the presence of Cs in CdO films. Moreover, first principles calculations were carried out for pure CdO and Cs-doped CdO to understand the experimentally observed results. The density of states (DOS) and partial density of states (PDOS) calculations show that decrease in the band gap energy upon doping of Cs in the bulk CdO structure, which coincides with the experimental results.

In this study, an ultrasonic nanocrystal surface modification (UNSM) was used to enhance mechanical properties of CuSn10Pb10 alloy. Top surface coarse grains were refined into nano-grains (mean size of 45–74 nm) after UNSM. Mechanical testing results revealed that the surface hardness, yield strength and ultimate tensile strength increased after UNSM owing to the formation of nano-grains containing some nano-twins that can be elucidated according to the Hall-Petch relationship. Grain size refinement mechanism was attributed to the increase in dislocation density and the formation of new dislocations, where the accumulation of them at low-angle grain boundaries caused a variation of the grain orientation.

We unexpectedly found a femtosecond laser deposition (fs-LD) technique for single-step fabricating Tin-oxide gas sensors coupling with peripheral interdigitated electrodes. Photons hit the precursor for an ultrafast nucleation and crystal growth at a nanometric voxel to grow non-directional SnO2 nanocrystal. We utilized the tunable laser exposure dose for morphological control, and the SnO2 nanospheres were optically assembled into micro-structured bridges interconnecting metal electrodes. Au-based interdigital electrodes (thickness

Efficient blue perovskite light-emitting diodes with stable and narrow wavelength have been realized by polymer modulated quasi-two dimensional EA2Csn-1PbnBr3n+1 perovskite films. The introduction of polyvinylpyrrolidone (PVP) can inhibit the growth of the nanocrystals, avoiding the appearance of the perovskite phase with narrower bandgap and resulting in a narrow emission and smooth morphology. As a result, blue PeLED with stable electroluminescent peak at 478 nm exhibits a maximum luminance of 227 cd/m2, a peak current efficiency of 0.35 cd/A and a maximum external quantum efficiency of 0.35%.

The effects of deformation and isothermal annealing in supercooled liquid region on the microstructure and room-temperature mechanical properties of the Ti33Zr30Cu9Ni5.5Be22.5 bulk metallic glass were systematically investigated. The results indicated that the thermally-deformed specimens exhibited denser structures and higher characteristic temperatures (Tg and Tx) than the annealed specimens at the corresponding temperature; however, this difference gradually decreased as the experimental temperature increased. Further, the thermally-deformed specimens exhibited higher yield and fracture strengths than the annealed specimens, whereas they exhibited similar plasticity. The deformed and annealed specimens precipitated some nanocrystals with a size of approximately 10 nm when the experimental temperature increased to 648 K, causing the rapid deterioration of their plasticity.

In this study, we investigated the structure of microdomains directly laser-written in the bulk of glass and containing CdS nanoparticles by transmission electron microscopy. The CdS nanocrystals have a multidisperse size distribution while quantum dots with a minimal size of ∼ 3–4 nm are registered near the edge of a microdomains. The size of CdS nanocrystals sweepingly increases up to ∼340 nm from the periphery to the center of the laser-written microdomain. It has been found that microdomains possess laser polarization-sensitive optical properties providing opportunities for the development of advanced optical data encoding and security tagging.

Electrophoretic deposition is a type of significant method for preparing coatings and films, which has been widely investigated in aqueous and organic suspensions. However, electrophoretic deposition in molten inorganic salts containing nanoparticles, have not been reported in the literature. Here we report the possibility of electrophoretic deposition of nanoparticles in molten inorganic salts. In two types of molten systems (fluorides (980 °C) and chlorides (710 °C)), the electrophoretic deposition of diboride nanoparticles (e.g., TiB2 and ZrB2) on different cathode substrates under cell voltages of 1.2–1.5 V (below the decomposition voltage of the electrolytes), has been successfully demonstrated, resulting in a compact TiB2 coating with hardness of 43.7 ± 2.8 GPa and a ZrB2 coating with a nanocrystal structure. Besides diboride nanoparticles, this proposed process should be applicable for a wider range of nanoparticles to produce more types of coatings and films.

Recently, Cs4PbBr6 has received much attention due to its potential remarkable green emission ability. Different from previous reports which usually synthesized Cs4PbBr6 in the forms of colloidal nanocrystals, powder or bulk crystal, here we proposed a facile method of growing highly-luminescent Cs4PbBr6 microcrystals on substrate. The obtained sample shown high photoluminescence quantum yield (PLQY) of about 48.9%. Through adjusting the growth condition, hexagonal and novel flower-like highly-luminescent Cs4PbBr6 microcrystals can be obtained. This kind of one-step synthesis of highly-luminescent Cs4PbBr6 microcrystals with ultra-high PLQY could be applied in the related integrated photonics and optoelectronic devices.

A novel conductive composite hydrogel (PPy/NCC-g-AA) was fabricated via an in-situ oxidative polymerization of pyrrole monomer (Py) into a three-dimensional (3D) framework of acrylic acid (AA) grafted nanocrystal cellulose hydrogel (NCC-g-AA). Due to the high stability of the semi-interpenetrating network structure originating from PPy and NCC-g-AA hydrogel, the mechanical strength of the composite hydrogel was significantly enhanced, with the compressive modulus increasing from 0.23 to 4.16 MPa. The introduced carboxyl groups of AA enabled the hydrogel with improved water retention capacity (swelling ratio up to 910%). By doping with sodium p-toluenesulfonate (TsONa), the hydrogel showed much higher electrical conductivity (up to 8.8 × 10−3 S·cm−1) than that of undoped. This hydrogel is a promising candidate for applications in catalyst supports, nerve regeneration and carbon capture.

Perovskite nanocrystal with good environmental stability is one of the most urgent problems to be solved in practical applications. Herein we report a fast facile polymer-assisted synthesis of all-inorganic perovskite nanocrystals (denoted as IPNCs) with environmental stability. The IPNCs with tunable bandgap and photoluminescence quantum yield (PLQY) (52%–93%) can be fabricated within 10 s at room temperature. The Poly (methyl methacrylate) (PMMA) polymer here not only directly acts as a ligand and reaction sites to confine the nucleation and crystal growth of IPNCs, but also facilitate the preparation of highly luminescent IPNCs-based film with superior water resistance. We also demonstrate its potential application in white light-emitting diodes (WLEDs) by combining green and red IPNCs-based film with a blue LED chips.

Hydroxyapatite nanocrystals were synthesized by wet chemical precipitation using bio-waste shells of mollusk (clam and mussel) and egg as feedstock materials. The powdered shells were calcined, dissolved in water, and the resulting product was reacted with phosphoric acid. X-ray diffraction analysis identified pure phase of hydroxyapatite for the three different raw materials. Transmission electron microscopy observations of hydroxyapatite indicated that rod-like crystals were produced in nanometric scale, which showed pH-dependent surface charges using zeta potential analysis. Overall, this study proved that calcium-rich bio-wastes are valuable materials to be used as feedstock for production of high purity and economically feasible hydroxyapatite nanocrystals for biomedical and technological applications.

Two-dimensional (2D) ceria nanoflakes with a thickness of ∼2 nm were successfully synthesized by cobalt doping via a one-step hydrothermal method. SEM, TEM, AFM, XRD and FT-IR were employed to reveal the morphologies and structures of the products. The results showed that the introduction of Co dopants was critical for the formation of unique 2D nanoflakes structure in this system and it is believed that nanoflakes were formed through a Co induced 2D self-assemble of small ceria nanocrystals based on the oriented attachment. In addition, the nanoflakes Co-CeO2 showed high catalytic activity for mercury oxidation due to the abundant oxygen defects, which was confirmed by the oxygen temperature-programmed desorption (O2-TPD) and Photoluminescence (PL) spectra. This work has provided new strategy of design and preparation of ceria nanomaterials with high catalytic activity.

A novel chemical reduction method was reported to prepare tunable spherical or belted morphologies of nano-selenium (Se) based on cellulose nanocrystal (CNC). The homogeneous Se nanospheres with size of about 36 nm can be found for Se-Sphere-12H by adding ascorbic acid (VC) as assisted reducing agent. The Se nanobelt with a length of about 800 nm can be observed for Se-Belt-12H through one-pot reaction of CNC with sodium selenite (Na2SeO3) under hydrothermal conditions. Moreover, Se-Belt-12H exhibited the higher crystallinity of 96.10% and maximum thermal degradation temperature (Tmax) of 479.4 °C, the highest capacitance and the smallest internal resistance.

In this paper, cellulose nanocrystal (CNC) and cellulose nanofiber (CNF) were prepared by chemical and mechanical methods, and their aerogel were fabricated by freeze-drying technology in combination with solvent replacement. The mixed aerogel of CNC and CNF showed better performance than that from pure CNC or CNF. What’s more, the mixture ratio of CNC and CNF has great influences on the properties of the prepared aerogel. When the mixture ratio of CNF and CNC was 3:1, the internal of aerogel presents a uniform three-dimensional network structure with abundant pores. It exhibited a higher specific surface area of up to 143 m2/g and the compressive strength was 0.202 MPa under 80% strain.

We report that the Ni nanocrystals with rod-like and cubic shapes can be prepared in organic solution with the aid of tungsten hexacarbonyl at a relatively low reaction temperature of 150 °C. The prepared Ni nanorods have a fivefold twinned structure with an average diameter of about 11 nm and length varying from several tens of nanometers to 150 nm whereas the obtained Ni nanocubes have an average size of about 19.2 nm. Magnetic measurements indicate that the as-prepared Ni crystals exhibit typical room-temperature ferromagnetic properties. The synthetic strategy revealed in this study provides useful guidelines for the preparation of non-spherical Ni nanocrystals.

The visible-light-driven Bi2MoO6/Ag3PO4/RGO composites were fabricated by a facile in situ precipitation and hydrothermal method and characterized. The as-synthesized Bi2MoO6 appears a sheet-like structure, while the cubic Ag3PO4 nanocrystals attached on the surface of Bi2MoO6 with an average diameter of about 10 nm. Both Bi2MoO6 and Ag3PO4 distributed well on the graphene oxide (GO) sheets, which can potentially improve the separation efficiency of photogenerated electron-hole pairs. Additionally, the high-surface-area GO sheets enhanced adsorption of dye molecules, and the photodegradation efficiency of reactive blue 19 (RB-19) dye under visible-light irradiation was as high as 98% in 3 h for Bi2MoO6/Ag3PO4/RGO heterostructure composite. Therefore, the Bi2MoO6/Ag3PO4/RGO photocatalyst can be a favorable alternative for practical use in environmental photocatalysis.

Anisotropic bulk Nd2Fe14B/α-Fe nanohybrid magnets have been prepared by high-pressure thermal compression (HPTC) of the blends of 70 wt% Nd-lean Nd9Fe85.5Cu1.5B4 amorphous and 30 wt% Nd-rich Nd13.6Fe73.6Ga0.6Co6.6B5.6 nanocrystalline alloys. The nanohybrid magnets have a high fraction ∼24 wt% of α-Fe phase and exhibit a (0 0 l) texture for Nd2Fe14B nanocrystals in both Nd-lean and Nd-rich regions. The Nd-lean region contains α-Fe and Nd2Fe14B nanograins with equivalent sizes of 19 nm and 27 nm and the Nd-rich region comprises Nd2Fe14B phase having lath nanograins with 20–35 nm in thickness and 50–142 nm in length. This nanohybid magnet exhibits a maximum energy product of 23 MGOe and an enhanced thermal stability. The present work provides a candidate route to fabricate high-performance bulk magnets for practical applications.

Synthesis of metal ions (Cd 2+ , Li + ) doped CePO 4 nanocrystals were achieved through a simple hydrothermal route at 150 °C using citric acid and poly-ethylene-glycol (PEG-6000). The results obtained reveal that the low percentage of (Cd 2+ , Li + ) dopant affect the structure showing a weak decrease in the lattice parameters compared to the CePO 4 . The total electrical conductivity plots obtained from impedance spectra, between 300 and 450 °C, indicated that the activation energies for CePO 4 , Ce 0.9 Cd 0.15 PO 4 , Ce 0.9 Cd 0.13 Li 0.04 PO 4 are 1.05, 0.99 and 0.72 eV, respectively, showing an increase of the total conductivity as Li-content increases. The conduction mechanism is described using correlated barrier hopping model. The partial substitution leads to the improvement capacity when increasing the Li-content from 65F·g −1 for Ce 0.9 Cd 0.15 PO 4 to 75F·g −1 for Ce 0.9 Cd 0.13 Li 0.04 PO 4 .

Novel three-dimensional (3D) mesoporous Co3O4 flowers constructed by many nanoneedles are synthesized by a facile hydrothermal method followed by calcinations in air. Such porous nanoneedles possess a rough surface and are consisted of numerous nanocrystals with a size ranging from 20 to 30 nm and many small intercrystallite pores. The BET surface area of Co3O4 microflowers is determined to be 61.37 cm2 g−1 with a dominant pore diameter of 8.5 nm. This facile strategy may be extended to synthesize other transition metal oxide materials with similar shapes, which may find application in sensors and supercapacitors due to their unique structural features.

The third-order optical nonlinearities of Ag2Se nanocrystals were investigated by using Z-scan techniques. Large optical susceptibility χ(3) with the imaginary and real parts of 5.0 × 10−11 esu and −(3.0 ± 0.2) × 10−9 esu has been obtained under 1 mW laser excitation, which is believed to originate from the intrinsic nonlinearity of Ag2Se nanocrystals. When 150 mW excitation power was applied, multiple diffraction rings were observed. The kinetic imaging results demonstrate that the rings originate from the self-phase modulations caused by the intrinsic nonlinearity and the thermal effect.

Gram-scale synthesis of monodisperse CuO nanocrystals with a size of ca. 8 nm was successfully achieved through a simple wet chemical method. Although the particles were nanoscale, they could be easily separated in several minutes without conventional time-consuming post-treatment processes. Moreover, the resultant CuO nanoparticles exhibit excellent performance for both reduction and degradation of p-nitrophenol in the presence of NaBH4 and H2O2, respectively.

Microporous zeolitic imidazolate frameworks (ZIFs) have shown great potential in many application fields. However, the small dimensions of ZIF nanoparticles make them difficult to employ in practical systems. To overcome this problem, a novel and efficient strategy has been developed to immobilize ZIF crystals on a macroporous phyllosilicate mineral. As an example, water-stable ZIF-8 nanocrystals were synthesized and assembled on the dopamine-modified surface of expanded vermiculite using the sequential addition of methanol solutions of Zn(NO3)2·6H2O and 2-methylimidazole. The ZIF-8 nanoparticle-decorated mineral exhibited a dense growth of microporous ZIF-8 nanocrystals of 80 ± 10 nm, resulting in 9.8 wt% of ZIF-8 loading and a BET surface area of 120 m2/g.

The selection of Low-e coated glass in the mid-latitude region has been a difficult subject. In this paper, a simple sol–gel method can be used to control the grain size of fluorine-doped tin oxide (FTO) nanocrystalline films by introducing complex chelating agents into the sols and controlling their contents. The film is a polycrystalline film with rutile structure. Through the electrochemical doping technology, the localized surface plasmonic electrochromism of FTO nanocrystals in the near infrared region (NIR) can be achieved, and the optical contrast at 1750 nm can reach 60%. The Low-e glass coated with this film can adjust dynamically the transmittance of NIR light according to people’s feelings, realize the effective control of the solar radiation heat through windows without affecting the daylight use at work time, and is suitable for using in mid-latitude zone.

Ag nanocrystals (AgNCs) decorated g-C3N4/Nafion hybrid membranes were synthesized by one-step method. And the nanostructures of as-prepared samples were characterized and analyzed by diverse techniques. The results indicated that AgNCs sized 4–5 nm were highly dispersed on the surface of g-C3N4/Nafion hybrid membranes, which can achieve stronger visible light absorption and higher charge separation efficiency. Due to the synergy effect, AgNCs decorated g-C3N4/Nafion hybrid membranes had excellent photocatalytic activity and good recycling stability in the degradation of Rhodamine B under visible-light irradiation. The possible photocatalytic mechanism of AgNCs decorated g-C3N4/Nafion hybrid membranes was tentatively proposed.